Have you ever lost in cyber world? Probably, you will answer, “Often,” or even, “I always lost.”

Cyber world is a world with no boundary. Once you type a keyword (e.g. Islam) to the search engine (Google, for example), you will be directed to tens of thousands, millions, and even tens of millions of searching results. Those are information that spread up in the cyber world, where a sahih and trustworthy information mixed in mislead information’s trap, how can you sort it?